@blackglory/wait-for/lib/wait-for-attached.js

A module for waiting for things to happen.

import { fromMutationObserver } from "./utils/from-mutation-observer.js";
import { filter, mergeMap } from 'rxjs/operators';
export function waitForAttached(...nodes) {
    return new Promise(resolve => {
        if (isAttached(nodes))
            return resolve();
        const observer = fromMutationObserver(document.documentElement, { childList: true, subtree: true }).pipe(mergeMap(mutations => mutations), filter(isAddedNodesMutation)).subscribe(() => {
            if (isAttached(nodes)) {
                observer.unsubscribe();
                resolve();
            }
        });
    });
}
function isAttached(nodes) {
    return nodes.every(x => document.documentElement.contains(x));
}
function isAddedNodesMutation(mutation) {
    return !!mutation.addedNodes;
}
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